I am adding in filters to DENY traffic to AOL, YAHOO and MSN
sites but the list is incomplete. In the case of Yahoo it continues to
other addresses based on the packet info at the server. Is there a way
block the Yahoo messengers of the world using filters and NAT. We have

blocked ICQ but these others just seem to grow by the minute.

Any ideas, can it be done? This is a BM3.6 server.